Holly Thorpe, a middle school student in Miami, Fla., designed her science fair project to measure CO2 inside school busses and outside in the loading zone. Dragging a 100 CC syringe in a test tube through the air, she determined that CO2 levels were 1000 parts per million (PPM) inside the bus, levels which can cause headaches,and nausea. Measurements in the loading zone were 5000 (PPM), which can cause even more serious illnesses such as asthma. Propelled by her passion for the environment and concern over climate change, Thorpe's findings spurred Miami-Dade's school district into switching to electric buses.

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